Sound-deadening case for typewriters, calculating machines, and the like



May a, 192.4. I 1,492,842

R. FRIES SOUND DEADENING CASE FOR TYPEWRITERS, CALCULATING MACHINES,ANDTHE LIKE Filed May 11 1922 SchniH/q-B 3 H5. 5 schn/ltC -.D

"MWASPJ I Patented May 6, 1924.

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R DoLr' FRIES, on BnRnIN-scnoN'EB RG, eERMAnYl Application fil'ed Ma1r,"192 2. semi 11555 0319: Y

T 0 all whom it may concern:

Be it known that I, RUDOLF F'RrEs,a citizen of the German Republic,residing at Berlin Schoneberg, Wartburgstrasse -23,

Sound-Deadening Cases" for Typewriters,

Calculating 'Machines, and the like, of which the following is aspecification. Y

The objectof the" presentinvention is a sound deadening case fortypewriters, calculating'machines and the like. I V

The essential feature of the invention eonsists therein that thesound-deadening case is formed of two parts, which are fixed to eachother bya connection, which may be easily unfastenedfor-renewal of theparts or for other purposes; one of said parts, say the base part, beingadapted to contain the main body of the typewriter, calculating machineor the like, with the platen, the writing mechanism, thepaper-carriageand adjoining parts, while the other part covers thekeyboard and adjoining levers of the machine. This division of thesound-deadening ease into two parts enables the same base portion to beused for different sorts of typewriters, so that only the other or frontpart of the case requires to be altered to fit the particular type ofmachine. Further, this construction permits of a quick operation of thekeyboard of the machine and an easy adjustment of such parts of thekeyboard and leverage which might have got out of order.

Another essential feature of the invention consists therein, that theabove mentioned main or base part of the casing is sub-divided into twoparts namely the fixed lower frame or cover enclosing the correspondingparts of the typewriter or other machine and an upper movable cover,which is hinged to the rear-wall of the lower frame orcover, and whichupper cover may be pivoted on hinges so as to allow of instantaneousaccess to the paper-carriage and to the writing mechanism if such partsshould need any adjustment or repair. Other characteristic features ofthe invention are that the sound deadening case may be readily fixed tothe usual base-board of the machine, preferably by means of screws,clamps, bolts or other suitable means although the base-board can bedispensed with. For fixing the machine to the bottom part of the case,the lowerframe or 'cover' maybe pro videdv at itslower inner side with aflange I or run or with parts formlng an" inner lower I f flange orrimon to which are clamped the Germany, have invented certain new anduseful Improvements in and Relating to said screws forclamps to hold'downflthe'machine. I l I In orderthat the invention may be readilyunderstood, I have shown int-he drawings a preferred embodiment ofthenew au a deadening eaise, in which c "F gure 'l 1s a-vertic'al'seetionon lin'eA- Bi of Fig.2, the cover of the" sound deade'ning cas'e beingelosed;1Fig. 2 is a plan view a t being shown-in horizontal? se ti .3 aical ie imil r. Fig. 1, but w1thout front" portion, and Wi outa-typewriter 'inachine being shown in the case; the movable cover can beswung back as indicated by dotted lines.

According to the construction shown, that part of the sound deadeningcase which covers the main-body of the typewriter con sists in thecentral cover or frame 1, to which is hinged the movable'cover 2, in thefront part of which is provided a window 3. The front portion 4:,containing dummy-keys is secured dust-proof to the central portion ofthe cover orframe by sliding same laterally into guideways 5 of thecentral cover, and by a front bar 13 and two or more fastening screws 6,7 whereby the front part is screwed down. to the base-plate. Theparticular shape of this front part 4 varies according to the kind ofkeyboard of the particular machine, but theposition of the guideways 5and of the fastening screws 6, 7 are the same for any kind of frontparts, in order to standardize the cases for a number of types by theuse of interchangeable portions.

The typewriter, which is indicated by dotted lines, rests, by means ofrubber feet, on the wooden base-board 11, the front and the back ofwhich are provided with bars 12, 13 serving as locating stops for thesound deadening case 1. The movable cover 2 of the case may be swunground on its axis 14, which is arranged at the lower part of therear-wall of the central frame or cover 1, in order that by swingingback the cover 2 the operator of the machine can expose the paper on thecarriage 10for corrections or the like instantaneously. A typewritereraser 16 is fixed to the cover 2 say at 18 by means of an may be lockedto prevent the machine being removed without destroying the entireoover.For the same purpose the bolts 19, which are provided at the lower innerbrim of the sound deadening case, and which may engage intocorresponding ears at the base-plate 11 are provided. The front part 4may be fixed to the central frame or cover 1 by similar bolt and earconnections or looks, which when in looking position, if the case andits base-plate are sufiiciently strong, and fixed to the typewritingtable or desk, then the machine is secure against theft.

I claim:

1. Sound deadening case comprising in combination, a fixed lower centralcover surrounding the main body of a machine with its platen, thewriting mechanism, the papercarriage and adjoining parts of the machine,a movable upper cover, hinged to the rearwall of lower cover, andadapted to be swung up and back round its hinges to give in stantaneousaccess to the paper-carriage and tothe writing mechanism, aninterchangeable front portion to cover the keyboard of the machine,means for securing same dustproof to the open front side of the centralcover and a keyboard having dummy-keys operating the ordinary keys ofthe machine, substantially as described and illustrated.

. 2. Sound deadening case comprising in combination, a fixed lowercentral cover surrounding the main-body of the machine with theexception of the keyboard, a hinged upper cover, on said central cover,a window in an inclined front side of said upper cover for permanentinspection of the writing mechanism and paper carriage, of the machine,an interchangeable front portion surrounding the keyboard of the machinesecured dust-proof to the open part of the front portion of the centralcover, a dummykeyboard in said front portion adapted to operate theordinary keys of the machine; detachable means at the inner side of thesound deadening case for fastening the case to the base-plate of themachine, which detachable means are not accessible from the outside ofthe case, and locks for locking the RUDOLF FRIES.

